261294897 has 8 divisors (see below), whose sum is σ = 366729760. Its totient is φ = 165028320.

The previous prime is 261294889. The next prime is 261294907. The reversal of 261294897 is 798492162.

261294897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261294897 - 2³ = 261294889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261294797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2292004 + ... + 2292117.

It is an arithmetic number, because the mean of its divisors is an integer number (45841220).

Almost surely, 2^261294897 is an apocalyptic number.

It is an amenable number.

261294897 is a deficient number, since it is larger than the sum of its proper divisors (105434863).

261294897 is a wasteful number, since it uses less digits than its factorization.

261294897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584143.

The product of its digits is 435456, while the sum is 48.

The square root of 261294897 is about 16164.6186778408. The cubic root of 261294897 is about 639.3082507963.

The spelling of 261294897 in words is "two hundred sixty-one million, two hundred ninety-four thousand, eight hundred ninety-seven".